中文摘要：

以朱集矿埋深900 m首采工作面沿空留巷扩刷修复工程为背景，采用现场实测和理论分析的方法分析深井留巷扩刷修复前围岩变形、应力、结构等状态，提出留巷扩刷修复结构临近失稳的概念，确定留巷扩刷修复的合理时机，组织留巷扩刷修复时的合理工序，制定留巷扩刷修复巷道的主被动协同支护方案。研究结果成功运用于朱集矿深部留巷扩刷修复工程，围岩监测结果表明，留巷扰动变形在修复后得到有效控制，各项指标满足下一工作面回采要求。

英文摘要：

Based on the gob-side entry retaining reparation engineering of first coal mining face in Zhuji mine around 900 m underground,deformation,stress and structure state of roadway surrounding rock before reparation were analyzed by field measurement and theoretical method;the conception of“critical structure between instability and stability”of gob-side entry retaining reparation was proposed;reasonable repairing time and construction process were determined;initiative-passive collaborative supporting system was concluded. Research result was applied to the gob-side entry retaining reparation engineering in Zhuji mine successfully. The results of ground pressure monitoring show that the deformation of this repaired roadway is controlled effectively;and all indices satisfy the requirements of next mining face.